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Chain of Custody Form Instructions for WTC Building Sampling

Machine-extracted title · confidence 100%

Instructions and sections for collecting sample location data from a specific building interior.

NYC-WTC_000149537–000149682

Folder label: “ATSDR/DHAC_ASTM

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NYC 9/11 Public Portal Document

I 31 Common ND ND <.001 NA 31 Res 1 ND ND <.001 NA 31 Res 2 ND ND <.001 NA 31 Outside X Not Sampled Not Sampled 0.001 NA

Building 32 PLM [%] TEM [%] PCM [f/cc] TEM [f/cc] 32 Outside Not Sampled Not Sampled <,001 NA 32 Common ND ND 0.002 NA 32 Res 1 ND ND <.001 NA 32 Res 1 X Not Sampled Not Sampled 0.001 NA

Building 33 PLM [%] TEM [%] PCM [f/cc] TEM [f/cc] 33 Outside Not Sampled Not Sampled Not Sampled NA 33 Common Not Sampled Not Sampled Not Sampled NA 33 Res 1 ND ND <.001 NA

Building 34 PLM [%] TEM [%] PCM [f/cc] TEM [f/cc] 34 Outside Not Sampled Not Sampled <.001 NA 34 Common ND ND <.001 NA 34 Resi ND Not Sampled 0.002 NA 34 Res 1X Not Sampled Not Sampled 0.003 NA Building 34 Notes: There was not enough material left to analyze the Residence 1 dust sample by TEM.

Notes Definitions of Abbreviations: PLM is Polarized Light Microscopy % Is percent of volume TEM Is Transmission Electron Microscopy___________________ PCM Is Phase Contrast Microscopy________________________ f/cc Is fibers per cubic centimeter__________________________ Res 1 Is Residential Unit 1______________ Res 2 is Residential Unit 2_______________________________ X is a co-located sample ND is not detected_____________________________________ NA Is not analyzed_____________________________________ ACM Is asbestos-containing material_______________________ PEP is the New York City Department of Environmental Protection DOH is the New York City Department of Health

Samples were not taken In some locations because: No dust available to collect; No consent from building management to do monitoring In outdoor or common areas; Unknown, reason was not specified on survey or chain of custody form.

NYC-WTC_000149611

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NYC-WTC_000149611Source: NYC Law Department, mirrored locally

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